Fall River minimum setbacks (distance from street to house) are 25 feet without a variance. That should allow plenty of room for your driveway.
I haven't seen any restrictions on length or driveway size.
Best of Luck,
The South Coast Real Estate Lady
Here are a few resourceful links:
I also sent them an email for you. I will let you know as soon as I receive a response.
Best Wishes & Happy Building!
If you are building without a permit; you are already in trouble!
If you have doubts, you should take your question to the Building Department, because anything we say in meaningless.
Good luck and may God bless